SB2019070209 - Remote code execution in Mongoose

Description

This security bulletin contains information about 1 vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2019-12951)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the "parse_mqtt()" function in the "mg_mqtt.c" file. A remote attacker can send a specially crafted request to the affected software, trigger a heap-based buffer overflow and execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/cesanta/mongoose/commit/b3e0f780c34cea88f057a62213c012aa88fe2deb
• https://github.com/cesanta/mongoose/releases/tag/6.15